. 2023 Nov 6;17:1261679. doi: 10.3389/fnins.2023.1261679

Table 7.

Abundances of potential porphyrins in human brain spectra, calculated by fitting the human brain spectra with specific portions of the basis spectra shown in Figure 5B and autofluorescence (lipofuscin, flavin, NADH) as described previously (Black et al., 2021).

A	[PpIX₆₃₄]	[PpIX₆₂₀]
RMS error: 0.0046 ± 0.0073	3.98 ± 8.68	0.71 ± 1.68
B	[PpIX₆₃₄]		[CpIII]
RMS error: 0.0052 ± 0.0086	4.02 ± 8.79		0.59 ± 1.45
C	[PpIX₆₃₄]	[PpIX₆₂₀]	[CpIII]
RMS error: 0.0046 ± 0.0073	3.97 ± 8.69	0.68 ± 1.68	0.049 ± 0.17